Best practice to recover a camera in read-only mode

[maxfrei750]

Hello!

If for some reason or another, the code is forcefully terminated, while inside of the camera context, I receive the following message, when trying to access the camera the next time:

vmbpy.error.VmbCameraError: Accessed Camera 'DEV_000F315BB1FC' with invalid Mode 'AccessMode.Full'. Valid modes are: (<AccessMode.Read: 2>,)

That makes sense, since the cleanup/teardown part of the context was not executed. The only way to recover the camera access that I found so far, is to physically reconnect the camera.

Is there any way to either prevent this problem or to recover from it using vmbpy?

Thanks!

[nordeh]

I'd suggest to either

• wait for Heartbeat timeout, depends on what was configured at the camera,
• stop acquisition. This is supposed to be done by the with statement.

Thanks
Norman

[maxfrei750]

Thanks for the information! Could you please go into a little more detail about the second solution?

How would I stop the acquisition, if I can only connect to the camera in read-only mode (after a forceful disconnect)?

Thanks!

[eddie3ruff]

I am also interested in a solution to this